Float.



G. H. ZWERMANN.

FLOAT.

APPLICATION FILED JAN. 31. 1910.

2 SHEETS-SHEET l.

g 1 M U t n m P 5911mm fez Witnmao G. H. ZWERMANN.

rum-r. APPLICATION FILED IAN. 31. 1910.

Patentefl July 19, 1910.

Gr ll. .fl-i in.

JLQAT.

Specification of Letters Eatent.

Patented July 19, 191d.

Application filed January 31, 1810. Serial No. 541,083.

'l'o all whom it may concern:

lie it known that l, Cam. ll. ZwnnMANN, a citizen of the United States, residing at Kalamazoo, Michigan, have invented certain loci and useful Improvements in Floats, of which the following is a specification.

This invention relates to improvements in floats.

The main objects oi my invention are: First, to provide an improved float which is economical toproduce and 1s eti'ective and very durable. Second, to provide an improved float which is especially adapted to be made of metal and ellcctively coated with enamel inside and out,,though it may be easily formed of glass or porcelain, or of some corrosion resisting metal.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The structures described constitute one oftective embodiment of my invention.

@ther embodiments can be readily devised by those skilled in the art.

The invention is clearly defined and point ed out in the claims.

Structures constituting effective and preterred embodiments of the features of my invention are clearly illustrated in the accompanying drawing, forming a part or" this specification, in which:

Figure l is a vertical section through a tank structure with a float embodying the' features of my invention shown in operative position; Fig. 2 is a. vertical central section through one of my improved floats; Fig. 3 is a section corresponding to Fig. 2, show-- ing a modified form of connection to the arm; Fig. & is a detail section of still another form of'arm connection, taken on line l-l of Fi 5, and Fig. 5 is a transverse plan section on line 55 of Fig. at.

in the drawings, similar reference numerals refer to similar parts throughout the several views. p

Referring to the drawings, 1 represents a tank, such as a water closet tank, and 2 the outerwall or casing thereof. A. supply pipe 3 is arranged through the bottom of the tank and projects upwardly therein. An inlet valve 4, details of which are not here shown, is provided.

lindrical in form and having hemispherical ends 6 and 7. The lower rounded end 7 has a central hole or opening therethrough, and produces a structure in which air is effectively confined and from which water is excluded, except as the contained air is compressed by the pressure of the water.

The arm 9 in the structure illustrated is fulcrnined at 10 to the bracket 11 ointlie inlet pipe. This arm is connected to the valve stem 12 and controls the same.

In the structure shown in Figs. 1 and "2, the arm is provided with n upturned end 13 at its outer end, which is arranged axially of the float shell and threaded into the internal nipple lt in the upper end thereof. This forms a rigid connection for the arm to the float, and keeps the float in an upright position.

l'n the modified construction shown in F1g. 3, the arm 9 is threaded into a nipple 15 arranged in the side of the float below the center thereof, so there is no tendency for the float to unscrew.

In the modifications in Figs. 4 and 5, the arm 9 is secured to a nipple 15 on a cross bar 17. There are thus two apertures, 16 and 10, in the bottom of the float.

In operation, the opening in the float is sealed by the water in the tank, thereby confining the air in the float and rendering it buoyant. By rounding the lower end of the float and providing a restricted opening 8 therefor, but little water is required to seal the float, and it is not likely to be unsealed by the changing of the angle of the float, as it is carried upward in the'arc of a circle on the connecting rod.

It is desired to comment that any means which will retain the float of the character I have described substantially upright with the aperture downward, so that the air will be efl'ectivelyconfined therein, subject to the pressure of the water upward through the aperture, will secure the benefits of my improved structure, when properly connected by any means.

This float is very economical to manufacture and when made of sheet metal and enameled, it is easily completely coated inside and out, and consequently can be made of iron and not be subject to corrosion, the aperture in the bottom making the float especially adapted to this end. Thisiform, however, lends itelf to glass floats and. to copper floats, although, as l have stated, 1t 

